TRANSPORT EFFICIENCY OPTIMIZATION FOR MOBILE IPV6

• US 20090067381A1
• Filed: 11/12/2008
• Published: 03/12/2009
• Est. Priority Date: 10/11/2002
• Status: Active Grant

• Current Assignee: Intellectual Ventures I LLC (Intellectual Ventures LLC)
• Original Assignee: Intellectual Ventures I LLC (Intellectual Ventures LLC)
• Inventors: Grech, Sandro
• Granted Patent: US 7,966,018 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 61/5084 Providing for device mobility network addressing or numbering for mobility support in wireless networks H04W8/26; mobile IP H04W80/04
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC
• CPC Class Codes: H04L 69/10 Streamlined, light-weight or high-speed protocols, e.g. express transfer protocol [XTP] or byte stream
• CPC Class Codes: H04L 69/16 Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• CPC Class Codes: H04L 69/161 Implementation details of TCP/IP or UDP/IP stack architecture; Specification of modified or new header fields
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 8/082 for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents
• CPC Class Codes: H04W 80/04 Network layer protocols, e.g. mobile IP [Internet Protocol]

Abstract

The present invention concerns a method and system for optimizing transport efficiency between a Mobile Node and a Correspondent Node in a Mobile IP network. A short Mobile Node Identifier is assigned to the Mobile Node. A Mobile Node Identifier Destination Option header comprising the assigned Mobile Node Identifier is used instead of the prior art Home Address Destination Option header in subsequent packets between the Mobile Node and the Correspondent Node.

Claims

1. A method for transporting packets in a mobile Internet Protocol (IP) network, the method comprising:

assigning a short mobile node identifier to a mobile node in response to a first message received from the mobile node;

transmitting the short mobile node identifier to the mobile node in a second message; and

receiving a packet from the mobile node, wherein the packet includes the short mobile node identifier in place of a home address, and further wherein the short mobile node identifier is used throughout an entire communication path between the mobile node and the correspondent node.

2. The method of claim 1, wherein the first message is a binding update message that includes a T flag.

3. The method of claim 2, wherein the short mobile node identifier is assigned in response to the T flag.

4. The method of claim 1, wherein the second message is a binding acknowledgement message.

5. The method of claim 1, further comprising storing the short mobile identifier in association with the home address of the mobile node and a care-of address of the mobile node.

6. The method of claim 1, further comprising identifying the home address of the mobile node based at least in part on the short mobile node identifier in the received packet.

7. The method of claim 6, further comprising forwarding the received packet to a layer of the correspondent node using the identified home address.

8. A method for transporting packets in a mobile Internet Protocol (IP) network, the method comprising:

transmitting a first message from a mobile node to a correspondent node;

receiving a second message from the correspondent node in response to the first message, wherein the second message includes a short mobile node identifier assigned to the mobile node; and

transmitting one or more packets to the correspondent node using the short mobile node identifier in place of a home address, wherein the short mobile node identifier is used throughout an entire communication path between the mobile node and the correspondent node.

9. The method of claim 8, further comprising storing the short mobile node identifier in association with an Internet protocol (IP) address of the correspondent node.

10. The method of claim 8, wherein the first message includes the home address of the mobile node and a care-of address of the mobile node.

11. The method of claim 8, wherein each of the one or more packets includes a mobile node identifier destination option header in place of a home address destination option header.

12. The method of claim 8, wherein the first message include a set acknowledge flag such that a binding acknowledgement message is received from the correspondent node.

13. The method of claim 12, wherein the second message comprises the binding acknowledgement message.

14. A correspondent node comprising:

a processor configured to assign a short mobile node identifier to a mobile node in response to a first message received from the mobile node;

a transmitter operatively coupled to the processor and configured to transmit the short mobile node identifier to the mobile node in a second message; and

a receiver operatively coupled to the processor and configured to receive a packet from the mobile node, wherein the packet includes the short mobile node identifier in place of a home address, and further wherein the short mobile node identifier is used throughout an entire communication path between the mobile node and the correspondent node.

15. The correspondent node of claim 14, wherein the second message includes an Internet protocol (IP) address of the correspondent node.

16. The correspondent node of claim 14, further comprising a binding cache operatively coupled to the processor and configured to store the short mobile node identifier.

17. The correspondent node of claim 14, wherein the short mobile node identifier is stored in association with the home address of the mobile node and with a care-of address of the mobile node.

18. The correspondent node of claim 14, wherein the processor is further configured to identify the home address of the mobile node based at least in part on the short mobile node identifier in the received packet.

19. The correspondent node of claim 18, wherein the processor is further configured to forward the received packet to a layer of the correspondent node using the identified home address.

20. A mobile node comprising:

a processor;

a receiver operatively coupled to the processor and configured to receive a second message from a correspondent node in response to a first message from the mobile node, wherein the second message includes a short mobile node identifier assigned to the mobile node; and

a transmitter operatively coupled to the processor and configured to

transmit the first message to the correspondent node; and

transmit a packet to the correspondent node, wherein the packet includes the short mobile node identifier in place of a home address, and further wherein the short mobile node identifier is used throughout an entire communication path between the mobile node and the correspondent node.

21. The mobile node of claim 20, further comprising a data structure operatively coupled to the processor and configured to store the short mobile node identifier.

22. The mobile node of claim 20, wherein the second message is a binding acknowledgement message that includes an Internet protocol (IP) address of the correspondent node.

23. The mobile node of claim 20, wherein the processor is configured to replace a home address destination option header of the packet with a mobile node identifier destination option header.

24. The mobile node of claim 20, wherein the processor is configured to add a mobile node identifier destination option header to the packet.

25. A correspondent node comprising:

means for assigning a short mobile node identifier to a mobile node in response to a first message received from the mobile node;

means for transmitting the short mobile node identifier to the mobile node in a second message; and

means for receiving a packet from the mobile node, wherein the packet includes the short mobile node identifier in place of a home address, and further wherein the short mobile node identifier is used throughout an entire communication path between the mobile node and the correspondent node.

26. The correspondent node of claim 25, wherein the first message is a binding update message that includes a T flag.

27. The correspondent node of claim 26, wherein the short mobile node identifier is assigned in response to the T flag.

28. A mobile node comprising:

means for receiving a second message from a correspondent node in response to a first message, wherein the second message includes a short mobile node identifier assigned to the mobile node; and

means for transmitting the first message from the mobile node to the correspondent node and for transmitting one or more packets to the correspondent node using the short mobile node identifier in place of a home address, wherein the short mobile node identifier is used throughout an entire communication path between the mobile node and the correspondent node.

29. The mobile node of claim 28, further comprising means for storing the short mobile node identifier in association with an Internet protocol (IP) address of the correspondent node.

30. The mobile node of claim 28, wherein the first message includes a set acknowledge flag such that the second message is generated by the correspondent node.